20 March 2020
⇐20200319 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200321⇒

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Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W20S62
(155",-796") 		E59-W49
(108) 		4.8 -1.3 -6.1e21
2 E14S11
(-228",-67") 		E27-W10
(37) 		2.2 -0.1 -2.9e19
3 W04N66
(27",921") 		E44-W48
(92) 		0.8 0.6 1.6e21
4 W20S34
(279",-438") 		W16-W23
(7) 		0.2 -0.6 -3.4e19
5 W14S27
(205",-336") 		W09-W17
(8) 		0.1 -0.9 -3.3e19
6 E38S28
(-528",-369") 		E40-E36
(4) 		0.1 -1.1 -3.4e19
7 W48S56
(406",-747") 		W43-W54
(11) 		0.0 -1.9 -9.1e19

Note: Solar Monitor's coronal hole segmentations are performed by CHIMERA, a copy of which is available at: github.com/TCDSolar/CHIMERA.

The operations of the CHIMERA algorithm is described in a peer reviewed paper: arxiv.org/abs/1711.11476.

An extensive copy of coronal hole properties are available at: solarmonitor.org/data.

The latest positions of the coronal holes are given in heliocentric co-ordinates, and the region positions are valid on 20-Mar-2020 20:30 UT .